Forces(Contact/Non-contact/Vector/Scalar

What are Scalar quantities

They have Magnitude only they don’t have direction

Give examples of Scalar quantity

Mass,Temperature,Speed,Energy,Distance,Time

What is a Vector quantities

Vector quantities have both magnitude and direction

What are the examples of Vector quantity

Displacement,Weight,Force,Velocity,Acceleration,Momentum

How can we represent vectors

Vector quantities can be represented with arrows

What does the length of an arrow represent

Magnitude

What is a force?

A force is a push or pull that acts on an object due to the interaction with another object

All forces between objects are either:

Contact forces:The objects are physically touching

Non-Contact forces-The objects are physically separated

How is there contact forces when a plane is landing on water?

When a plane is landing the force of friction is acting between the water and the aeroplane and this causes plane to slow down and stop

How is there a contact force with tension?

When you pull a rope the force of tension is pulling on the soldier

How is there contact forces in a skydiver?

As the skydiver falls through the air, air particles collide with the parachute and this causes the force of air resistance to act upwards

How does contact forces act on a object on the table?

When a lamp is on a table the lamp exerts a force downwards and that force is the weight of lamp. At the same time the table is exerting a force upwards which is called a normal contact force

What is a non-contact force

Two objects that physically separated

How is a gravitational force a non-contact force?

Attracts all objects to other objects

How is a electrostatic force a non-contact force

Is the force between two charged objects

How is magnetic force a non-contact force?

Magnetic force is a force experienced by certain objects in a magnetic field